Re: [Qemu-devel] [PATCH 0/6] hw/arm: add initial support for Canon DIGIC SoC

[Antony Pavlov <antonynpavlov@gmail.com>]

On Mon, 16 Dec 2013 14:02:57 +0400
Antony Pavlov <antonynpavlov@gmail.com> wrote:

Sorry!
I have added --cover-letter option but I have forgot add "v10". 

> Changes since v9:
>  1. rebase over Peter Crosthwaite's "Fix Support for ARM CBAR and
>     reset-hivecs" v5 patch series
>  2. qom-test: add "canon-a1100" to arm machines list
>  3. include a diffstat in the cover letter (--cover-letter option)
>  4. fix patches timestamp
> 
> Changes since v8:
>  1. digic-timer: move hardware-related macros to the header file
>  2. digic-timer: use extract32 instead of & >> logic
>  3. digic-timer, digic-uart: move header files to include/hw/...
>  4. digic-timer, digic-uart: fix other trivial stuff
>     fix emptyline; also add "/*< private >*/" and "/*< public >*/"
>  5. fix patches timestamp
> 
> Changes since v7:
>  1. change "fprintf(stderr," -> "error_report("
>     (thanks to Peter Crosthwaite)
>  2. fix digic_timer
>     * use ptimer in continuous mode according to Peter Crosthwaite's
>       recommendations;
>     * implement the 'control' and 'reload value' registers.
>  3. fix patches timestamp
> 
> Changes since v6:
>  1. rebase over Peter Crosthwaite's "Fix Support for ARM CBAR and
>     reset-hivecs" v4 patch series
>  2. digic_boards: drop start_addr
>     so the line 's->digic->cpu.env.regs[15] = board->start_addr;' has gone
>  3. hw/arc/digic: use "reset-hivecs" ARM CPU property
>  4. add a record to the MAINTAINERS file
> 
> Changes since v5:
>  1. rebase over latest master
>  2. digic_timer: add a reset function
>  3. digic_timer: add a VMStateDescription
>  4. digic_timer: fix whitespaces
>  5. digic_boards: fix whitespaces
>  6. move misplaced DIGIC_ROM* definitions
>     to the "hw/arm/digic: add NOR ROM support" patch
> 
> Changes since v4:
>  1. digic.h: parent_obj: change type Object -> DeviceState
>  2. digic-uart: drop reg array
>  3. digic_boards: fix K8P3215UQB comment
>  4. Makefile: place digic stuff in own line
>  5. drop cpu-qom.h inclusion
>  6. digic.h: add private/public labels
>  7. digic.h: fix guard macro
>  8. move base address macros to digic.c
>  9. fix header comments
> 
> Changes since v3:
>  1. fix typos and formatting
>  2. digic-timer: drop DPRINTF
>  3. digic-timer: fix DIGIC4_TIMER_BASE() macro
>  4. digic.c: fix max timer device string
> 
> Changes since v2:
>  1. rebase over latest master;
>    * pass available size to object_initialize().
>  2. digic-uart: qemu_log: use LOG_UNIMP instead LOG_GUEST_ERROR;
>  3. digic-boards: update rom image load code: introduce digic_load_rom().
> 
> Changes since v1:
>  0. drop the "add ARM946E-S CPU" patch;
>  1. convert to QOM, split DIGIC SoC code and board code
>     (thanks to Andreas Fa:rber, Peter Maydell and Peter Crosthwaite);
>  2. fix digic-uart (many thanks to Peter Crosthwaite
>     for his comments);
>  3. digic-boards: digic4_add_k8p3215uqb_rom(): update
>     rom image load code: use the '-bios' option.
> 
> DIGIC is Canon Inc.'s name for a family of SoC
> for digital cameras and camcorders.
> 
> See http://en.wikipedia.org/wiki/DIGIC for details.
> 
> There is no publicly available specification for
> DIGIC chips. All information about DIGIC chip
> internals is based on reverse engineering efforts
> made by CHDK (http://chdk.wikia.com) and
> Magic Lantern (http://www.magiclantern.fm) projects
> contributors.
> 
> Also this patch series adds initial support for Canon
> PowerShot A1100 IS compact camera (it is my only camera
> with connected UART interface). As the DIGIC-based cameras
> differences mostly are insignificant (e.g. RAM-size,
> ROM type and size, GPIO usage) the other compact
> and DSLR cameras support can be easily added.
> 
> This DIGIC support patch series is inspired
> by EOS QEMU from Magic Lantern project.
> The main differences:
>  * EOS QEMU uses home-brew all-in-one monolith design;
>  this patch series uses conventional QEMU object-centric design;
>  * EOS QEMU tries provide simplest emulation for most
>  controllers inside SoC to run Magic Lantern firmware;
>  this patch series provide more complete support
>  only for core devices to run barebox bootloader.
>   ** EOS QEMU does not support timer counting
>   (this patch series emulate 1 MHz counting);
>   ** EOS QEMU support DIGIC UART only for output
>   character to stderr; (this patch series emulate
>   introduces full blown UART interface);
>   ** EOS QEMU has incomplete ROM support;
>   (this patch series uses conventional QEMU pflash).
> 
> This initial DIGIC support can't be used to run
> the original camera firmware, but it can successfully
> run experimental version of barebox bootloader
> (see http://www.barebox.org).
> 
> The last sources of barebox for PowerShot A1100 can be
> obtained here:
>   https://github.com/frantony/barebox/tree/next.digic.20131213
> 
> The precompiled ROM image usable with QEMU can be
> obtained here:
>   https://github.com/frantony/barebox/raw/next.digic.20131213/canon-a1100-rom1.bin
> Download this ROM image and just run QEMU:
>   qemu-system-arm -M canon-a1100 -serial stdio
> 
> Short build instruction for QEMU bios image (canon-a1100-rom1.bin):
>   $ git clone https://github.com/frantony/barebox -b next.digic.20131213
>   $ cd barebox
>   $ export ARCH=arm
>   $ export CROSS_COMPILE=<your ARM cross-compiler prefix>
>   $ make canon-a1100_defconfig
>   $ make
>   $ ./mk-canon-a1100-rom1.sh
> 
> This ROM image (after "dancing bit" encoding) can be run on
> real Canon A1100 camera.
> 
> The short build instruction for __previous__ DIGIC barebox
> version (it can be used with more recent sources too) can
> be obtained here:
>   http://lists.infradead.org/pipermail/barebox/2013-August/016007.html
> 
> Antony Pavlov (6):
>   hw/arm: add very initial support for Canon DIGIC SoC
>   hw/arm/digic: prepare DIGIC-based boards support
>   hw/arm/digic: add timer support
>   hw/arm/digic: add UART support
>   hw/arm/digic: add NOR ROM support
>   MAINTAINERS: Document 'Canon DIGIC' machine
> 
>  MAINTAINERS                     |   6 ++
>  default-configs/arm-softmmu.mak |   1 +
>  hw/arm/Makefile.objs            |   2 +
>  hw/arm/digic.c                  | 115 ++++++++++++++++++++++++
>  hw/arm/digic_boards.c           | 154 +++++++++++++++++++++++++++++++
>  hw/char/Makefile.objs           |   1 +
>  hw/char/digic-uart.c            | 195 ++++++++++++++++++++++++++++++++++++++++
>  hw/timer/Makefile.objs          |   1 +
>  hw/timer/digic-timer.c          | 163 +++++++++++++++++++++++++++++++++
>  include/hw/arm/digic.h          |  43 +++++++++
>  include/hw/char/digic-uart.h    |  47 ++++++++++
>  include/hw/timer/digic-timer.h  |  46 ++++++++++
>  tests/qom-test.c                |   1 +
>  13 files changed, 775 insertions(+)
>  create mode 100644 hw/arm/digic.c
>  create mode 100644 hw/arm/digic_boards.c
>  create mode 100644 hw/char/digic-uart.c
>  create mode 100644 hw/timer/digic-timer.c
>  create mode 100644 include/hw/arm/digic.h
>  create mode 100644 include/hw/char/digic-uart.h
>  create mode 100644 include/hw/timer/digic-timer.h
> 
> -- 
> 1.8.5
> 


-- 
-- 
Best regards,
  Antony Pavlov